Ventilation of rooms or buildings.



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UNITED STATES PATENT OFFICE.

`SERGIUS TIMOKHOVITSCH, OF MOSCOW, RUSSIA.

VENTILATION OF ROOMS OR BUILDINGS.

SPECIFICATION forming part of Letters Patent No. 720,755, dated February17, 1903.

Application iiled May 2, 1901.

sein No. 53,501. (No man.)

To a/ZZ whom, t may concern:

Be it known that I, SEEGIUS TIMOKHO- VITSCH, a subject of the Emperor ofRussia, and a resident of Miassnilzkaia 24, Moscow, Russia, haveinvented certain new and useful Improvements Relating to the Ventilationof Rooms or Buildings, of which the following is a specification.

My invention has relation to the ventilation of inclosed spaces, such asrooms, halls, or other spaces in a building; and it has for its objectthe provision of means whereby the air supplied from without is filteredbefore it is distributed in the space to be ventilated.

The invention has for its further object the provision 0f means forremoving the filtering medium from and restoring it tothe airdistribution.

The invention may be carried into practical eect in various ways, and inorder that this may be fully understood I will describe the saidinvention in detail, reference being had to the accompanying drawings,wherein I have illustrated several modes of carrying it out. A

Figure l is a fragmentary longitudinal sec tion, and Fig. 2 a similarcross-section illustrating an arrangement for taking in air from theoutside through a suitable port and passage in one of the outer walls ofa building. Figs. 3 and 4 are views similar to Figs. l and 2,respectively, illustrating an arrangement for taking in air throughatransom or the like above a Window or a double window. Fig. 5 is across-section of a modified form of airintake or duct and filter; andFigs. 6 and 7 are fragmentary longitudinal sections illustrating otherarrangements for taking in, filtering, and distributing the air.

As shown in Figs. 1 and 2, the air distributing and filtering duct D isarranged close to the ceiling of the room and connected with a passage Ain the wall of the building communicating with the atmosphere. The outerend of this passage A is suitably protected against ingress ofv coarseimpurities or birds by a screen im. and a grating fn., and in the innerend of the passage is an open-ended valveoasing g, containing athrottle-valve g', controlled by means of a suitable chain or cord c'.

The air filtering and distributing duct D is constructed as follows: Askeleton frame is composed of wires-as, for instance, of four wires c.,b, c, and di, Fig. 2-Which are strung throughapertures formed at thecorners of supporting-frames Z, which may be made of wood or metal,andarranged at suitable distances apart, the ends of the wires beingrespectively secured to the valve-casing g and to the opposite. wall ofthe room. 0n this framing is mounted a filtering medium d2 in the formof a suitable fabric, so that it may be readily removed and replaced forcleansing or for the substitution of a new Vone when Worn, and to thisend buttonholes can be provided along one of the meeting edges of thefabric and buttons along the other. In practice I prefer to use a nappedfabric, as canton-flannel or similar fabrics, having a rather open-meshWoven body or ground and wind the same on the framework with the smoothback or ground fabric outside, so that the air entering the ductD thusformed will be freed from such impurities as would pass through evenvery fine perforations of the perforated distributing-pipes, the

use of which has been proposed before my invention.` I may also coverthe framing of the duct D with a more or less open-mesh wire fabric h,as shown at the leftY of Figs. 1 and 3, as a means for preventing thefiltering medium from sagging, though this is not abvsolutely necessaryif the wire supporting and bracing frames Z are placed sufiicientlyclosetogether. p

If desired, air may be supplied to the airdistributing duct D from morethan one point, and in Figs. 1 and 6 I have shown in dotted lines asecond valve-controlled air-inlet A about midway of the length of thefiltering and distributing duct D. This duct D may also have atriangular form in cross-section, as shown in Fig. 5, while the airinstead of being taken in through one or more of the outer walls of abuilding may be taken in through a transom above one of the windows orabove a' double window, as shown in Figs. 3 and Ll, or the filtering anddistributing duct can be formed in or arranged to form a part of thecornice of a room, as shown in Fig. 6, While said duct or ducts may beformed in the ceiling of a room between one or more IOO joists, as maybe necessary, as shown in Fig. 7 wherein D' indicates the air-intake,which may be carried through an outer wall.

Any suitable well-kn own means may be provided for exhausting the foulair from the rooms supplied with filtered air, as described, andinasmuch as the air passes but slowly through the filtering medium itbecomes heated to the temperature of the air in the room, unpleasant orinjurious drafts being effectually avoided.

It will of course be understood that in the ventilation of a buildingthe outer air may be taken from any suitable elevation above groundthrough a suitable duct and forced into the distributing-tubes by meansof a suction and forcing device.

Having thus described my invention, what I claim as new therein, anddesire to secure by Letters Patent, is-

l. The combination with a room, hall or the like; of an air-intakearranged along the ceiling and comprising a skeleton frame and a more orless loosely woven napped fabric surrounding the support with its nappedside turned inwardly, means for admitting fresh air to said intake andmeans for controlling the admission of such air, for the purpose setforth.

2. The combination with a room, hall or the like, of an air-intakearranged along the ceiling and comprising an open-Work support and amore or less loosely Woven napped fabric detachably secured to andsurrounding the support with the napped side turned inwardly, means foradmitting air to the intake and means for controlling the admission ofsuch air, for the 'purpose set forth.

3. Thecombination with a room, hall lor the like, of an open-Workair-intake extending along the ceiling, and a covering for said intakeof a more or less loosely woven napped fabric with the napped faceturned inwardly, means for admitting fresh air to said intake and meansfor controlling the admission of such air, for the purpose set forth.

4. The combination with a room, hall or the like, of an air-intakecomprising hangers connected to the ceiling, wires strung through thehangers and having their ends secured to opposite walls to form theskeleton frame of a duct, said wires having their terminals secured toopposite walls, a covering for said frame of a more or less looselyWoven napped fabric detachably secured to the frame with the napped sideturned inwardly, means for admitting fresh air to the intake and meansfor controlling the admission of such air, for

the purpose set forth.

5. An air distributing and filtering duct comprising a skeleton frame, asheet of a.

more or less loosely woven napped fabric surrounding the same with itsnapped side turned inwardly, the two forming a duct, said sheet offabric detachably united along its meeting edges, for the purposes setforth.

In witness whereof I have hereunto set my hand in presence of twowitnesses.

SERGIUS TIMOKHOVITSGH. Witnesses:

N. TsCHEKALoFF, H. LovIAGUINE.

